Title: Analog-to-digital converters utilizing gunn effect devices

Abstract: A parallel or serial analog-to-digital converter utilizing both Gunn effect devices and field effect transistors. The converters are based on a differential pair of amplifiers consisting of two or more Gunn effect devices, one of which is biased close to the knee of the current-voltage characteristic before the negative resistance region. Hence a clock pulse will bias one of the devices into the negative resistance region while the other device is now biased close to the knee to be able to respond to the analog signal. This is due to the fact that both devices are biased by a common constant current source, including a field effect transistor.

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Inventors: Claxton, Dale H. (Hawthorne, CA, US)
Miller, Chauncey S. (Rancho Palos Verdes, CA, US)

Application Number: 592421
Filing Date: 1975-07-02
Publication_date: 1976-06-15
Assignee: TRW Inc. (Redondo Beach, CA)
Primary Class(es): 341/133 257/7, 341/158
Other Classes:
US Patent Ref:

2950469	Aug, 1960	Raasch	340/347.
3178700	Apr, 1965	Kaenel	340/347.
3242479	Mar, 1966	Euler	340/347.
3594618	Jul, 1971	Hartnagel	340/347.
3766372	Oct, 1973	Kataoka	357/3.

Other Refs:
Primary Examiner: Miller, Charles D.
Assistant Examiner:
Attorney: Anderson; Daniel T., Oser; Edwin A., Dinardo; Jerry A.